Faecal Sedimentation for Trematode Egg Detection
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Questions and Answers

What is the primary purpose of the faecal sedimentation technique?

  • To quantify the amount of trematode eggs in faeces
  • To detect trematode eggs in faeces (correct)
  • To detect nematode eggs in faeces
  • To distinguish between trematode and cestode eggs

    • What is the ratio of faeces to water in the initial mixture of the sedimentation procedure?

  • 1:15 (correct)
  • 1:5
  • 1:20
  • 1:10

    • What is the purpose of adding 10% formalin to the mixture?

  • To increase the viscosity of the mixture
  • To dissolve the ether
  • To preserve the trematode eggs (correct)
  • To facilitate the sedimentation process

    • What is characteristic of the body of common trematodes?

    <p>Flattened body</p> Signup and view all the answers

    How many suckers do common trematodes have?

    <p>Two</p> Signup and view all the answers

    What is unique about the life cycle of trematodes?

    <p>They are heteroxenous parasites</p> Signup and view all the answers

    Which of the following trematodes has a characteristic cephalic cone?

    <p>Fasciola hepatica</p> Signup and view all the answers

    What is the size of the egg of Fasciola hepatica?

    <p>130-150 µm long by 60-90 µm wide</p> Signup and view all the answers

    Which stage of the trematode life cycle is infective?

    <p>The Metacercaria</p> Signup and view all the answers

    What is the common name of Paramphistomum spp.?

    <p>Rumen Fluke</p> Signup and view all the answers

    Which of the following trematodes has a flat body shape?

    <p>Fasciola hepatica</p> Signup and view all the answers

    What is the length of the Cercaria of Fasciola hepatica?

    <p>Long and unforked</p> Signup and view all the answers

    What is the typical size of a Fascioloides magna in the liver parenchyma?

    <p>1 cm</p> Signup and view all the answers

    What is the characteristic feature of Schistosoma haematobium eggs?

    <p>Presence of a prominent terminal spine at the posterior end</p> Signup and view all the answers

    Which of the following is NOT a characteristic of Schistosoma spp. eggs?

    <p>Thick-shelled and dark brown in color</p> Signup and view all the answers

    What is the typical location of Dicrocoelium dendriticum in the host?

    <p>Bile ducts</p> Signup and view all the answers

    What is the size range of Schistosoma japonicum eggs?

    <p>114 to 180 µm long by 45-70 µm wide</p> Signup and view all the answers

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